Application Flexibility for Compact Pneumatic Circuits
The Festo VABS-K3-16S-20-G18-P sub-base (manufacturer ID 8186873) is engineered for pneumatic systems where space is at a premium and mounting orientation cannot be dictated by the valve. With a valve size of 16 mm and a nominal width of 2 mm, this sub-base suits compact valve assemblies used in pick-and-place units, small clamping fixtures, or test rigs. Its ability to be mounted in any position simplifies integration into existing machinery, especially where vertical or inverted mounting is required. The connection direction at the side further aids routing of tubing in tight control cabinets or on moving machine elements.
Material and Media Compatibility
The sub-base is manufactured from PEEK, a high-performance polymer known for its mechanical strength and chemical resistance. This material choice, combined with the unit's RoHS compliance, makes the VABS-K3-16S-20-G18-P suitable for applications where material purity and environmental regulations are critical. The unit is rated for both liquid and gaseous media, but it is essential to verify that all wetted materials are compatible with your specific medium, as noted in the product documentation. The corrosion resistance class (CRC) is 0, indicating no corrosion stress, which is typical for dry, non-aggressive environments. For food industry use, refer to the supplementary material information to confirm suitability for your specific process conditions.
Installation and Integration Details
This sub-base features an internal thread G1/8 for pneumatic connections and is designed for valve mounting with an internal thread. The sub-base itself is mounted using through-holes, allowing secure fixing to a manifold or machine frame. Pay attention to the maximum tightening torques: 0.3 Nm for valve mounting, 0.6 Nm for the sub-base mounting screws, and 7 Nm for pneumatic fittings. These values prevent over-tightening that could damage the PEEK body or distort the sealing surfaces. The flow direction is reversible, offering flexibility in how you route the supply and exhaust lines. The unit supports a maximum of one valve position, so plan your circuit accordingly.
Environmental and Operational Parameters
The VABS-K3-16S-20-G18-P operates within a temperature range of 0°C to 50°C for both the medium and the ambient environment. Storage temperature can range from -20°C to 70°C, making it suitable for warehouses in varied climates. The product weight is only 26 g, contributing to lightweight system designs. The unit meets LABS (PWIS) conformity to VDMA24364 zone III, which is important for paint and adhesive applications where silicone-free materials are required to avoid surface defects.
Practical Considerations for Procurement and Design
When specifying this sub-base, verify that the valve size and mounting pattern match your chosen pneumatic valve. The nominal width of 2 mm influences flow rate; ensure it meets the actuator's speed and force requirements. The reversible flow direction and any-position mounting reduce the need for custom manifolds, potentially lowering inventory complexity. Because the sub-base is made of PEEK, it offers a longer service life in demanding cycling applications compared to standard aluminum or plastic alternatives. Always confirm that the operating medium is compatible with PEEK and any seals in the valve assembly, as the manufacturer advises checking material resistance.